Daniil the Tactician

Daniil the Tactician was a Greek mercenary who was active during the Peloponnesian War.

Biography
Daniil was a strong mercenary, and he was always calm before a battle, arrogantly thinking that he had already won; unfortunately, that didn't always translate to the actual fight. In 431 BC, he was hired to hunt down the Cephalonian mercenary Kassandra.